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AIOA

A simple spawning overhaul that turns Minecraft into a zombie apocalypse.

29 config settings

Build 0.2.0 · checked 13 September 2026

Guides

Config

  • Per-entity override: animals only animal_target_entity_ids option — Mobs in this list hunt animals instead of using the default apocalypse target mode. Use ids or friendly mob names.
  • Per-entity override: target everything everything_target_entity_ids option — Mobs in this list attack nearly anything alive except themselves and other zombies. Use ids or friendly mob names.
  • Per-entity override: other mobs only other_mob_target_entity_ids option — Mobs in this list target non-player mobs for chaos-heavy scenarios. Use ids or friendly mob names.
Show all 29 settings
  • Per-entity override: players only player_only_target_entity_ids option — Mobs in this list ignore the default target mode and focus only on players. Use ids or friendly mob names.
  • Mobs using refined AI refined_ai_entity_ids option — Add any vanilla or modded mob here by id or friendly name to give it the refined apocalypse chase/pathfinding behavior.
  • Allow refined pathfinding to use doors refined_pathfinding_opens_doors option — Lets refined ground mobs path through doors instead of stalling outside structures.
  • Enable refined chase AI refined_zombie_ai option — Improves pursuit with more aggressive chasing, better path refreshes, and longer awareness for selected mobs.
  • Mobs allowed to climb walls wall_climbing_entity_ids option — Any mob in this list can climb like a spider while actively chasing a target. Friendly names work here too.
  • Default apocalypse target mode zombie_target_mode option — This default target rule applies to zombies and any mob you place into the refined AI list unless a per-entity override says otherwise.
  • Zombie variant mode zombie_variant_mode option — Choose whether AIOA day-spawned zombies can appear as regular, baby, or both variants.
  • Enable wall climbing zombies_can_climb_walls option — Lets selected apocalypse mobs scale walls like spiders when chasing something above them.
  • Allowed biome IDs allowed_biome_ids option — Leave this empty to allow all biomes. Biomes still use exact registry names such as minecraft:plains.
  • Enable hostile spawn nullification enabled option — Cancel hostile natural-style spawns unless they are explicitly allow-listed.
  • Export mob catalog file export_mob_catalog option — Write aioa-mob-catalog.txt in the config folder with all valid configurable mob IDs and ready-to-copy templates.
  • Maximum nearby managed mobs max_nearby_managed_mobs option — Cap the number of AIOA-managed day spawns near each player.
  • Maximum spawn distance max_spawn_distance option — Set the outer ring radius for day-spawn attempts around players.
  • Minimum spawn distance min_spawn_distance option — Prevent AIOA from dropping mobs too close to players.
  • Overworld only overworld_only option — Leave the Nether, End, and any other dimensions alone.
  • Prevent sunlight burn prevent_sunlight_burn option — Protect all enabled day-pool entities from daylight burning, including naturally spawned ones.
  • Remove baby variants remove_baby_variants option — Force AIOA day-spawned baby-capable mobs to adult variants. If a mob cannot be forced to adult, that spawn is skipped.
  • Require clear sky require_clear_sky option — Only place day-spawn mobs in spots with direct sky access.
  • Require daytime require_daytime option — Only run the apocalypse surface spawner while the world is in daytime.
  • Spawn attempts per player spawn_attempts_per_player option — How many weighted spawn attempts AIOA makes around each valid player per cycle.
  • Spawn interval (ticks) spawn_interval_ticks option — How often the day-surface spawner runs. 200 ticks is 10 seconds.
  • Day spawn pool entries spawn_pool_entries option — Format: mob_selector;enabled=true;rarity=common;chance=1.0;min=1;max=3. The first segment can be an id, friendly mob name, or Name (modid:id).
  • Ignore spawner spawns ignore_spawner_spawns option — Leave mob spawners and similar block-driven spawn sources untouched.
  • Ignore special spawns ignore_special_spawns option — Skip patrols, events, reinforcements, spawn eggs, commands, and similar special cases.
  • Ignore structure spawns ignore_structure_spawns option — Do not suppress hostiles spawned by structure rules when this is enabled.
  • Allowed hostile entity IDs whitelist_entity_ids option — Each entry can be a registry id, a friendly mob name, or a label like Zombie (minecraft:zombie).

Requires

ModNeededVersions
yet_another_config_lib_v3 required [0,)
catalogue required [0,)
configured required [0,)
cloth_config required [0,)
supermartijn642configlib required [0,)

Frequently Asked Questions

How does AIOA change monster spawning in Minecraft?

It suppresses standard hostile spawns and replaces them with customizable daytime zombie apocalypse spawns that survive in sunlight.

Can monsters climb walls in AIOA?

Yes, enabling wall climbing allows designated apocalypse mobs to scale vertical blocks like spiders when pursuing targets.

How do you protect monster spawners from being suppressed?

Enable the ignore spawner-based hostile spawns setting in the config to allow dungeon spawners to operate normally.

Can apocalypse zombies target animals instead of players?

Yes, players can set the default target mode to animals only or use per-entity overrides to make specific mobs hunt livestock.

How do you stop baby zombies from spawning during daytime waves?

Enable the remove baby variants setting to automatically convert eligible baby spawns into adult monsters.

Download Links

Mods › AIOA